Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
67 + 20 = ______
45 + 20 = ______
6 × 10 = ______
21 − 10 = ______
35 − 10 = ______
87 + 20 = ______
4 × 10 = ______
89 − 10 = ______
95 − 10 = ______
40 + 10 = ______
34 + 20 = ______
12 + 20 = ______
30 + 10 = ______
37 − 10 = ______
81 + 10 = ______
63 + 10 = ______
9 × 10 = ______
55 + 20 = ______
46 + 20 = ______
60 + 10 = ______
